28414470 has 64 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 6457728.

The previous prime is 28414433. The next prime is 28414487. The reversal of 28414470 is 7441482.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56239 + ... + 56741.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^28414470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28414470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39191040).

28414470 is an abundant number, since it is smaller than the sum of its proper divisors (49967610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28414470 is a wasteful number, since it uses less digits than its factorization.

28414470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 28414470 is about 5330.5224884621. The cubic root of 28414470 is about 305.1498681190.

The spelling of 28414470 in words is "twenty-eight million, four hundred fourteen thousand, four hundred seventy".